LM4992SD/NOPB National Semiconductor, LM4992SD/NOPB Datasheet - Page 5

• Manufacturer Part Number: LM4992SD/NOPB
• Description: IC AMP AUDIO PWR 1.07W AB 14LLP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4992SD/NOPB

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1.07W x 2 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 14-LLP
• For Use With: LM4992SDBD - BOARD EVALUATION LM4992SD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4992SD; LM4992SDTR

External Components Description
Typical Performance Characteristics
Components
(Figure 1)
1.
2.
3.
4.
5.
C
C
R
C
R
S
B
i
i
f
and PWR = 500mW, per channel
and PWR = 150mW, per channel
Inverting input resistance which sets the closed-loop gain in conjunction with R
high pass filter with C
Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a
highpass filter with R
for an explanation of how to determine the value of C
Feedback resistance which sets the closed-loop gain in conjunction with R
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External
Components, for information concerning proper placement and selection of C
THD+N vs Frequency
THD+N vs Frequency
at V
at V
DD
DD
= 2.6V, 8Ω R
= 5V, 8Ω R
i
L
i
at f
L
,
at f
,
c
C
= 1/(2π R
= 1/(2π R
200761F1
200761F3
i
i
C
C
i
i
). Refer to the section, Proper Selection of External Components,
).
Functional Description
5
i
.
and PWR = 250mW, per channel
THD+N vs Frequency
THD+N vs Power Out
at V
at V
1kHz, per channel
DD
DD
= 3.3V, 8Ω R
i
.
= 5V, 8Ω R
B
f
. This resistor also forms a
.
L
L
,
,
200761F4
200761F2
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